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Showing 1-30 of 43 results for "37018" within Papers
Jian-Chun Qin et al.
Natural product communications, 4(11), 1473-1476 (2009-12-09)
From the medicinal plant Ginkgo biloba the fungal endophyte Alternaria no.28 was isolated. Extract of the fungus grown in liquid culture media exhibited marked cytotoxic activity when tested in vitro against brine shrimp (Artemia salina). Eight compounds were isolated from
Ann-Kristin Rausch et al.
Journal of agricultural and food chemistry, 68(16), 4657-4669 (2020-03-29)
Here, a reliable and sensitive method for the determination of 38 (modified) mycotoxins was developed. Using a QuEChERS-based extraction method [acetonitrile/water/formic acid (75:20:5, v/v/v)], followed by two runs of high performance liquid chromatography tandem mass spectrometry with different conditions, relevant
Mónica Canafoglia et al.
Revista iberoamericana de micologia, 24(1), 56-58 (2007-06-27)
Fungi contaminant of alpataco (Prosopis flexuosa) fruits from La Pampa province (Argentina) were identified. Alternaria alternata and Sphaeropsis sapinea were the dominant species. Phoma sp., Nigrospora sp., Preussia minima, Cladosporium sp., Pithomyces chartarum, Epicoccum nigrum, Aspergillus niger and Aspergillus speluneus
Sergey Dobretsov et al.
Biofouling, 27(8), 893-905 (2011-09-03)
Seventy eight natural products from chemical libraries containing compounds from marine organisms (sponges, algae, fungi, tunicates and cyanobacteria) and terrestrial plants, were screened for the inhibition of bacterial quorum sensing (QS) using a reporter strain Chromobacterium violaceum CV017. About half
Determination of tenuazonic acid in human urine by means of a stable isotope dilution assay
Asam S, et al.
Analytical and Bioanalytical Chemistry, 405(12), 4149-4158 (2013)
Madeleine Gross et al.
Journal of agricultural and food chemistry, 59(23), 12317-12322 (2011-11-08)
The Alternaria mycotoxin tenuazonic acid was derivatized with succinic anhydride and conjugated to keyhole limpet hemocyanin (KLH) and to horseradish peroxidase (HRP), respectively. The KLH conjugate was used to produce polyclonal antibodies in rabbits. A competitive direct enzyme immunoassay (EIA)
Lijie Xing et al.
Food chemistry, 311, 125975-125975 (2019-12-20)
A modified quick, easy, cheap, effective, rugged, and safe method coupled with ultra-high performance liquid chromatography-tandem mass spectrometry was established for the simultaneous detection of five Alternaria toxins (tenuazonic acid, alternariol, alternariol monomethyl ether, altenuene, and tentoxin) in wolfberry. The
Dominik Braun et al.
Frontiers in chemistry, 8, 423-423 (2020-06-09)
Exposure to natural food contaminants during infancy may influence health consequences later in life. Hence, breast milk may serve as a vehicle to transport these contaminants, including mycotoxins, from mothers to their infants. Analytical methods mostly focused on single exposures
Julian G Hurdle et al.
Antimicrobial agents and chemotherapy, 53(9), 4028-4031 (2009-07-08)
The potential for reutericyclin derivatives to be used as topical antibiotics to treat staphylococcal skin infections was investigated. All reutericyclins inhibited the growth of clinical isolates of drug-resistant Staphylococcus aureus. Unlike the standard topical agent mupirocin, most reutericyclin derivatives eradicated
Christoph Schwarz et al.
Toxicology letters, 214(1), 46-52 (2012-08-22)
Alternaria spp. are known to form a spectrum of secondary metabolites with alternariol (AOH), alternariol monomethyl ether (AME), altenuene (ALT) and tenuazonic acid (TA) as the major mycotoxins with respect to quantity. In the present study we investigated the contribution
Shiguo Chen et al.
Biochimica et biophysica acta, 1767(4), 306-318 (2007-03-24)
Tenuazonic acid (TeA) is a natural phytotoxin produced by Alternaria alternata, the causal agent of brown leaf spot disease of Eupatorium adenophorum. Results from chlorophyll fluorescence revealed TeA can block electron flow from Q(A) to Q(B) at photosystem II acceptor
Céline Peillod et al.
Toxins, 13(2) (2021-03-07)
Toxic effects among fumonisins B (FB), deoxynivalenol (DON) and zearalenone (ZEN) administered alone and combined were investigated in 84-day-old ducks during force-feeding. 75 male ducks, divided into five groups of 15 animals, received daily during the meal a capsule containing
Simultaneous determination of ochratoxin A and cyclopiazonic, mycophenolic, and tenuazonic acids in cornflakes by solid-phase microextraction coupled to high-performance liquid chromatography
Aresta A, et al.
Journal of Agricultural and Food Chemistry, 51(18), 5232-5237 (2003)
M P Azcarate et al.
Journal of food protection, 71(6), 1262-1265 (2008-07-03)
The natural occurrence of Alternaria mycotoxins in Argentinean wheat from the zone 5 South during the 2004 to 2005 harvest was investigated in 64 wheat samples. All samples were highly contaminated with a wide range of fungal species. Alternaria was
Recent advances in tenuazonic acid as a potential herbicide
Chen S and Qiang S
Pesticide Biochemistry and Physiology (2017)
Kai Zhao et al.
Journal of agricultural and food chemistry, 63(1), 343-348 (2014-12-19)
A total of 70 tomato-based and 86 citrus-based products collected in China were analyzed for alternariol, alternariol monomethyl ether, tentoxin, and tenuazonic acid by ultraperformance liquid chromatography–electrospray ionization–tandem mass spectrometry. No toxins were found in any fresh tomato or citrus
S Hofstetter et al.
Applied and environmental microbiology, 79(6), 2103-2106 (2013-01-22)
This study determined the membrane fluidity of clostridial endospores during treatment with heat and pressure with nisin or reutericyclin. Heating (90°C) reduced laurdan (6-dodecanoyl-2-dimethylaminonaphthalene) general polarization, corresponding to membrane fluidization. Pressure (200 MPa) stabilized membrane order. Reutericyclin and nisin exhibit
Peter K Bjørk et al.
The New phytologist, 226(3), 770-784 (2019-12-28)
Pathogenic fungi often target the plant plasma membrane (PM) H+ -ATPase during infection. To identify pathogenic compounds targeting plant H+ -ATPases, we screened extracts from 10 Stemphylium species for their effect on H+ -ATPase activity. We identified Stemphylium loti extracts
Andrea Patriarca et al.
International journal of food microbiology, 291, 135-143 (2018-12-01)
The group of the small-spored Alternaria species is particularly relevant in foods due to its high frequency and wide distribution in different crops. These species are responsible for the accumulation of mycotoxins and bioactive secondary metabolites in food. The taxonomy
Meng Wang et al.
Journal of chromatography. A, 1429, 22-29 (2016-01-05)
A simple and rapid extraction procedure for the simultaneous determination of eight mycotoxins (Alternaria toxins, ochratoxin A, patulin, citrinin) in a variety of fruit matrices has been developed using ultra high performance liquid chromatography coupled to tandem mass spectrometry. The
Jing Zhao et al.
Peptides, 33(2), 206-211 (2012-01-17)
A novel antimicrobial peptide, with molecular mass of 1602.0469Da, produced by Brevibacillus laterosporus strain A60 was isolated and purified from the soil of mango plants. The purification procedure consisted of ammonium sulfate precipitation, cation exchange chromatography on an HiTrap SP
Shiguo Chen et al.
Plant physiology and biochemistry : PPB, 52, 38-51 (2012-02-07)
3-Acetyl-5-isopropyltetramic acid (3-AIPTA), a derivate of tetramic acid, is responsible for brown leaf-spot disease in many plants and often kills seedlings of both mono- and dicotyledonous plants. To further elucidate the mode of action of 3-AIPTA, during 3-AIPTA-induced cell necrosis
Xiaoqian Wu et al.
The Journal of antimicrobial chemotherapy, 68(4), 806-815 (2012-12-25)
The stationary phase of Clostridium difficile, which is primarily responsible for diarrhoeal symptoms, is refractory to antibiotic killing. We investigated whether disrupting the functions of the clostridial membrane is an approach to control C. difficile infections by promptly removing growing
Birgitte Andersen et al.
International journal of food microbiology, 111(2), 105-111 (2006-08-08)
Some Alternaria species are able to produce plant pathogenic as well as toxic metabolites. In both agriculture and the food industry it is important know if toxigenic Alternaria are present to rapidly employ the correct corrective actions. The purpose of
D Tardieu et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 148, 111968-111968 (2021-01-11)
Previous studies using zearalenone (ZEN) and fumonisins (FB) revealed alpha-zearalanol (α-ZOL) and FB1 in the liver of turkeys and chickens with no sign of toxicity. The aim of the present study was to determine whether contamination persists after distribution of
Julian G Hurdle et al.
The Journal of antimicrobial chemotherapy, 66(8), 1773-1776 (2011-06-03)
The stationary phase of Clostridium difficile, which is associated with the symptoms of the diarrhoeal disease, is refractory to antibiotic killing. The aim of this study was to explore whether probiotic-derived reutericyclin and related synthetic analogues could kill stationary phase
Xiaoting Qiao et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1144, 122096-122096 (2020-04-07)
Alternaria mycotoxins, such as tenuazonic acid (TeA), altenuene (ALT), alternariol (AOH), tentoxin (TEN) and alternariol monomethyl ether (AME) are frequently found in foods and may pose a potential risk to human health. Human biomonitoring can help measure our exposure to
M O Moss
Journal of applied microbiology, 104(5), 1239-1243 (2008-01-26)
The role of moulds in the spoilage of fresh fruits and vegetables is discussed. Although the major problems are economic with a significant loss of useful food materials, there are a few examples implicating a role for mycotoxins in the
Simmon Hofstetter et al.
Food microbiology, 34(1), 46-51 (2013-03-19)
The effects of high pressure, temperature, and antimicrobial compounds on endospores of Clostridium spp. were examined. Minimal inhibitory concentrations (MIC) of nisin and reutericyclin were determined for vegetative cells and endospores of Clostridium sporogenes ATCC 7955, Clostridium beijerinckii ATCC 8260
Yong-Chul Jeong et al.
The Journal of organic chemistry, 76(5), 1342-1354 (2011-01-22)
The synthesis of 3-acyltetramic acids, the substructure of bioactive natural products, via O-acylation of tetramic acids with carboxylic acids followed by acyl migration, has been investigated. This acylation sequence is mediated by N,N'-dicyclohexylcarbodiimide (DCC) and 4-dimethylaminopyridine (DMAP) and is very
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